Heat Sink with Fan
 

has anyone used or heard of anyone using one...http://www.jce-racing.com/

not that one but ive used the one from ae on my xxxt.i had to make a custome heatsink cause lack of room but otherwise the fan is positioned over the endbell as well as the can.it does keep the motor cooler for longer runtimes,helps out esc heat as well.

im not sure on this design though.the fan is right on the heatsink blowing hot air off it.i have air blow on rather than off

can you post the link to the heat sink you are using? Thanks